Piaget Protocole Onyx Diamond 18K White Gold Ultra-Thin Ref. 9150 (Circa 1980s) others Clear engravings remain on the

Clear engravings remain on the caseback

26 width excl

While the dial may initially seem simple

bracelet can fit a wrist of 16

Piaget Protocole Onyx Diamond 18K White Gold Ultra-Thin Ref. 9150 (Circa 1980s) others Clear engravings remain on theWHY WE CURATED IT: Piagets Protocole was its 1963 showcase of elegant ultra thin mechanical watchmaking, securing its place in not just haute joaillerie but haute horlogerie too. Its legacy persists today in the form of ultra thin Altiplanos, but it was really the Protocole that started it all. And rightfully, vintage examples have seen a sharp resurgence in recent years. Here we have a more evolved iteration from the 80s, featuring rounded edges,